rs144767577

Positions:

chr1-205058188-A-G

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 3P and 16B. PM2PP2BP4_StrongBP6_Very_StrongBS1

The ENST00000331830.7(CNTN2):c.223A>G(p.Met75Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0004 in 1,590,434 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00047 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00039 ( 1 hom. )

Consequence

CNTN2
ENST00000331830.7 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 0.773

Variant links:

Genes affected

CNTN2 (HGNC:2172): (contactin 2) This gene encodes a member of the contactin family of proteins, part of the immunoglobulin superfamily of cell adhesion molecules. The encoded glycosylphosphatidylinositol (GPI)-anchored neuronal membrane protein plays a role in the proliferation, migration, and axon guidance of neurons of the developing cerebellum. A mutation in this gene may be associated with adult myoclonic epilepsy. [provided by RefSeq, Sep 2016]

CNTN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CNTN2. . Gene score misZ 2.5878 (greater than the threshold 3.09). Trascript score misZ 3.2882 (greater than threshold 3.09). GenCC has associacion of gene with benign adult familial myoclonic epilepsy, complex neurodevelopmental disorder, epilepsy, familial adult myoclonic, 5.

BP4

Computational evidence support a benign effect (MetaRNN=0.0061230958).

BP6

Variant 1-205058188-A-G is Benign according to our data. Variant chr1-205058188-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 581019.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000473 (72/152264) while in subpopulation AMR AF= 0.000261 (4/15302). AF 95% confidence interval is 0.0000887. There are 0 homozygotes in gnomad4. There are 38 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CNTN2	NM_005076.5 linkuse as main transcript	c.223A>G	p.Met75Val	missense_variant	4/23	ENST00000331830.7	NP_005067.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CNTN2	ENST00000331830.7 linkuse as main transcript	c.223A>G	p.Met75Val	missense_variant	4/23	1	NM_005076.5	ENSP00000330633	P1

Frequencies

GnomAD3 genomes

AF:

0.000473

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.0164

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00144

GnomAD3 exomes

AF:

0.000733

AC:

167

AN:

227740

Hom.:

AF XY:

0.000709

AC XY:

AN XY:

122734

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000222

Gnomad ASJ exome

AF:

0.0165

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000388

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000183

Gnomad OTH exome

AF:

0.00128

GnomAD4 exome

AF:

0.000392

AC:

564

AN:

1438170

Hom.:

Cov.:

AF XY:

0.000385

AC XY:

275

AN XY:

713394

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000216

Gnomad4 ASJ exome

AF:

0.0156

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000122

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000845

Gnomad4 OTH exome

AF:

0.00136

GnomAD4 genome

AF:

0.000473

AC:

AN:

152264

Hom.:

Cov.:

AF XY:

0.000510

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000261

Gnomad4 ASJ

AF:

0.0164

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000842

Hom.:

Bravo

AF:

0.000540

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.000544

AC:

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Mar 01, 2024	CNTN2: BP4, BS1 -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

CNTN2-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 10, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Epilepsy, familial adult myoclonic, 5

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 02, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.63

CADD

Benign

DANN

Benign

0.93

DEOGEN2

Benign

0.10

T;T;.

Eigen

Benign

-0.39

Eigen_PC

Benign

-0.14

FATHMM_MKL

Uncertain

0.84

LIST_S2

Uncertain

0.88

.;.;D

M_CAP

Benign

0.0075

MetaRNN

Benign

0.0061

T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

-0.63

N;N;.

MutationTaster

Benign

0.94

PrimateAI

Benign

0.44

PROVEAN

Benign

-1.0

.;N;.

REVEL

Benign

0.074

Sift

Benign

0.23

.;T;.

Sift4G

Benign

0.59

.;T;.

Polyphen

0.0060

B;B;.

Vest4

0.11

MVP

0.59

MPC

0.43

ClinPred

0.021

GERP RS

5.3

Varity_R

0.23

gMVP

0.59

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over